table.copy()

Overview

Returns a shallow copy of array, i.e. the portion of the array (table) with integer keys. A variable number of additional arrays can be passed in as optional arguments. If an array has a hole (a nil entry), copying in a given source array stops at the last consecutive item prior to the hole.

In Lua, the function table.concat() is equivalent to JavaScript’s array.join(). Hence, the following function is called copy().

Syntax

table.copy( t )

table.copy( t, ... )

Example

local t1 = {1,3,5,7,9}
local t2 = {2,4,6,333}
t2[6] = 555 -- create hole
local t3 = {11,13,17,19}
 
local c = table.copy( t1, t2, t3 )

-- output: 1, 3, 5, 7, 9, 2, 4, 6, 333, 11, 13, 17, 19
print( table.concat( c, ", " ) )